Folding system



FIG. 1 is a first embodiment of a perspective view of welding machine;

FIG. 2 is a front elevation view;

FIG. 3 is a right side view.

FIG. 4 is a second embodiment of a perspective view of welding machine;

FIG. 5 is a front elevation view;

FIG. 6 is a right side view.

FIG. 7 is an upper housing portion of a welding machine shown removed for clarity of disclosure.

FIG. 8 is the curvature of a right side of a housing of a welding machine shown removed for clarity of disclosure; and,

FIG. 9 is a housing of a welding machine shown removed for clarity of disclosure. 

CLAIM The ornamental design for a folding system, as shown and described. 